Portion of a fan blade



FIG. 1 is a perspective view from below of a first embodiment of aportion of fan blade in accordance with my design;

FIG. 2 is a perspective view from below of a second embodiment of aportion of fan blade in accordance with my design;

FIG. 3 is an enlarged bottom plan view of the first embodiment of aportion of fan blade in accordance with my design;

FIG. 4 is an enlarged top plan view of the first embodiment of a portionof fan blade in accordance with my design;

FIG. 5 is an enlarged bottom plan view of the second embodiment of aportion of fan blade in accordance with my design; and,

FIG. 6 is an enlarged top plan view of the second embodiment of aportion of fan blade in accordance with my design.

The broken lines showing environmental structure are for illustrativepurposes and form no part of the claimed design.

The ornamental design for the portion of a fan blade, as shown anddescribed.